I recently installed Debian to a flash drive and all is running well, except for the network card.

It's an Intel Pro/1000 MT PCI card. It detects just fine but refuses to negotiate at 1Gb. I have a D-Link DGS-1024D switch and other cards negotiate at 1Gb without any problems. I know the cord is good because I can plug it into a different Gb card and it negotiates properly. I've also tried 4 different ports on the switch. I've also tried a Netgear Gb switch and the card still negotiates at 100Mb.

I've also installed the e1000 driver from Intel but that didn't help.

Tried forcing 1Gb via ethtool but it just brings down the card and it re-negotiates back to 100Mb.

I built this little server for the sole purpose of being a Gb file server so this is really frustrating.

Any suggestions?

which kernel version are you running? there is a native support for your NIC in 2.6.22.6 (_E1000)

also there is a document that comes with kernel source for your nic
Documentation/networking/e1000.txt that is talking about what needs to be done in order for your NIC to operate at 1kmbps

also there are some switches that are not supported, but i looked, and they are not mentioning your switch, so that is fine i guess.

just look through that doc, they are describing several things that can cause your adapter not to operate at 1k speed